Interpolation

• Interpolation using #{} for strings, integers, floating point numbers

• and even expressions.

name = "Foo Bar"
pi = 3.14
radius = 3
yesno = true
puts "Hello #{name}"
puts "PI is #{pi}"
puts "The area of a circle with a radius of #{radius} is #{pi * radius**2}!"
puts "Boolean #{yesno}"

Hello Foo Bar
PI is 3.14
The area of a circle with a radius of 3 is 28.26!
Boolean true